Home
About
FAQs
System Requirements
In the news
Workshops
Training
Training Calendar
Request for Training
Training Status
Registration
For Teachers
For Students
For Schools
Contact us
Login
Languages
English
हिंदी
മലയാളം
తెలుగు
Français
मराठी
Español
ಕನ್ನಡ
you are here->
home
->
Physics
->
Class 12
->
Ohm's law and resistance
Ohm's law and resistance
Theory
Theory
Procedure
Animation
Simulator
Video
Viva Voce
Resources
Feedback
1)
Which Law explains the following? At constant temperature the current flowing through a conductor is directly proportional to the potential difference between its ends.
Ohm’s Law
Charle’s Law
Boyle’s Law
Joule’s Law
2)
What does the current through a wire depend on?
The resistance of the wire.
The thickness of the wire.
The potential difference applied.
Both resistance and potential difference.
3)
You are measuring the current in a circuit that is operated on an 18 V battery. The ammeter reads 40 mA. Later you notice the current has dropped to 20 mA. How much has the voltage changed?
9 v
36 v
0 v
18 v
4)
What is the shape of V v/s I graph for a linear resistor?
Parabola
Straight line
Hyperbola
None of these
5)
Which of the following represent ohm’s law?
Current = Resistance / Potential difference
None of these
Current = Resistance × potential difference.
Potential difference / current = Resistance
6)
What is the potential difference required to pass a current of 5A through a metallic rod of resistance 10Ω?
0.5V
0.05V
50V
5V
7)
Choose the correct statement from the alternatives?
Every material has resistance.
The resistance of a material is independent of the current passing through it.
Resistance of a material is the measure of how much it opposes the passage of free electrons.
All of them are true
8)
What is the resistor value in the given circuit?
200 Ω
1 k Ω
2 k Ω
4 k Ω
9)
Which one of the following is the resistivity of gold wire?
1.59 x 10¯⁸ Ωm
2.82 x 10¯⁸ Ωm
2.44 x 10¯⁸ Ωm
100 x 10¯⁸ Ωm
10)
If the voltage across a fixed value of resistance is increased five times, what will be the variation in current?
Decreases to a factor of five
Become doubled
Increases to a factor of five
Remains fixed
Please enable JavaScript to view the
comments powered by Disqus.
Cite this Simulator:
amrita.olabs.edu.in,. (2013). Ohm's law and resistance. Retrieved 18 February 2018, from amrita.olabs.edu.in/?sub=1&brch=6&sim=22&cnt=39